Hi Vint_Mow. Sorry I didn't reply much sooner.
Some of the caps come in so many different sizes, I have some that are around 2cm across, and others around 7-10cm across. Plastic caps are usually the go if you need a lid. Check out the local dump or ask around on some local buy swap and sell pages, there are usually a couple people with empty tins that they are willing to give away. Take the lids off, and there you go! Chuck them onto yours and your sorted.
Have you got a picture of your tins?
Cheers!
